LTE Standard Module Series
EC20 R2.1 Mini PCIe Hardware Design
EC20_R2.1_Mini_PCIe_Hardware_Design 2 / 51
About the Document
History
Revision
Date
Author
Description
1.0
2017-12-22
Woody WU/
Niko WU
Initial
1.1
2019-09-10
Lorry XU/
Niko WU
1. Added LTE-TDD band B34 (Table 1, 19, 20, 23, 24
and 26).
2. Updated key features of EC20 R2.1 Mini PCIe
module (Table 2).
3. Updated names of pin 3 and 5 from RESERVED to
COEX_UART_RX
and
COEX_UART_TX
respectively (Figure 2).
4. Updated
pin
definition
and
description
of
COEX_UART_RX and COEX_UART_TX (Table 4).
5. Updated reference circuit of USB interface (Figure 5).
6. Added description of COEX UART interface (Chapter
3.6.2).
7. Updated reference circuit of (U)SIM interface with an
8-pin (U)SIM card connector (Figure 7).
8. Updated description of PCM interface (Chapter 3.9).
9. Updated description of W_DISABLE# (Chapter
3.10.3).
10. Added note for antenna requirements (Chapter 5.2).
11. Updated thermal consideration (Chapter 6.6).
